Road grading machine



. Feb. 7, 1933.

T. D. WORKMAN ROAD GRADING MACHINE :5 Sheefcs-Sheet l Original Filed July 17, 1929 ,ll nllll,

ATTO R NEY Feb. 7, 1933. 'rl D WORKMAN 1,896,931

ROADA GRADING MAGHINE- originaliled July 17, 1929 5 sheets-Sheet 2 Z719. Va/tf/zdmmvmon ATTORNEY Original Filed July 17, 1929 T. D. WORKMAN ROAD GRADING MACHINE BY my ATTORNEY Feb. 7, 1933.

T, D. WORKMAN 1,896,931v

ROAD GRADING MACHINE Original Filed July 1'7, 1929 5 Sheets-Sheet 4 ATTOR NEY Feb. 7, 1933. T D, WORKMAN 1,896,931

ROAD GRADING MACHINE Original Filed July 17, 1929 5 Sheets-Sheet 5 ATTORNEY Patented Feb. 7, 1933 y'rrtolus D. woman, or eENnsno, meas MAD GRADING MACHINE Application led July 17, 1929, Serial-No. 379,032. Renewed December 89, 1982.

This invention relates to road grading machines and has for an object the provislon of amachine by means of which a road or other surface may be scraped, rolled and properly graded. l

Another object of the invention is the provision of novel means for mounting and adjusting the scraper blade whereby the blade may be vertically and laterally positloned and its horizontal, as well as its vertical angular position, be adjusted.

Another ,object of the inventionis the provision of a road grading machine which may be detachably mounted upon a tractor, so that the tractor may be used to drive the grader in addition to its other work.

With the above and other objects in view,

the invention further includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings y Figure 1 is a side elevation of the invention.

Figure 2 is a top plan view. y

Figure 3 is an enlarged fragmentary vertical sectional view through the front end of the machine.

Figure 4 is a transverse sectional view.

Figure 5 is a fragmentar vertical sectional view on the line 5-5 of igure 4.

Figure 6 is a detail section on the line 6-6 of Figure 5.

Figure 7 is a fragmentary sectional view illustrating the means for locking the blade in its angular horizontal position.

Figure 8 is a transverse sectional view of o the frame showing the motor supporting yoke. Figure 9 is a sectional view through one pair of traction wheels. e

Figure 10 is an elevation of the steering rollers. Y

Referring to the drawingsin detail wherein like characters of reference denote corresponding parts, the reference character 10 indicates, the side beams of the main frame which also includes a cross beam 10. The

side beams are connected by' suitable reinforcing plates 11 and have extending therefrom, arms'12 which are connected to the cross beam, the latter having rearwardly extending portions. Legs 13 extend downward- 55 ly from the rear ends of the said portions and the lower ends of these legs have clamped thereto roller bearings 16 for a purpose which will be later described, and inclined braces 17 serve to reinforce and stabilize the frame at this point.

A substantially U-shaped yoke 18 has its opposite ends bifurcated to receive the beams 10, the bifurcated ends of the yoke 18 being removably attached to the beams 1() as shown at 19. The yoke extends beneath the body 15 of a tractor and is secured thereto as shown at 20. The tractor may thus be driven between the beams 10 and the yoke or saddle 70 18 connected to the tractor, the front wheels of the tractor of course being removed.

The front ends of the beams l0 extend relatively inward and their forward ends are connected, so that the front end of the frame is pointed. Extending vertically through the front end of the frame is a steering post 21 whose lower end has mounted thereon a drum 22. This drum is positioned between plates 23' and 24; which are located beneath the 80 frame. l

Positioned beneath the forward end of the machine frame is a steering frame 25. This frame-is rectangular in plan and carries a yoke 26 from which rises a king pin 27. The 85 pin 27 extends through a suitable bearing provided in the machine frame as shown at 28 and is secured in place by a nut 29, so that the steering frame 25 may be horizontally rotated. An arcuate guide bar 30 has its opposite ends connected to the frame 25. This bar is of T-shaped cross section and one of itsflanges operates within a channel guide 31 carried by the plate 23. A chain 32 is 95 wound upon the drum 22 and has its opposite ends connected with the steering frame 25, so that when the steering post 21 is rotated, the frame 25 will be moved upon the king pin 27 Rollers 33 are j ournaled in the frame 25 100 able bearings provided upon the grader frame. l

Relatively wide plairs of traction members 41 are provided wi openin s 42-so as to provide increased traction and t e traction members 41 cooperate with the tractor wheels to provide rollers as best shown in Figure 9. The traction members 41 are rovided wlth hubs 13"through which exten stub axles 14 f that are mounted in the bearingsl16 rovided in the lower ends of the legs 13, as s own; in Fivure l, and the hubs 13 are fixed to the hu sof the traction wheels, so that the traction members and tractor wheels are clamped together for rotation in unison. By connecting the legs 13 to the stub axles and the traction members of the latter to the tractor wheels, and securing the tractor body to the side beams 10, as has been previously described it will be seen that the tractor forms part of the grader although it is removable therefrom for other uses when desired.

Arranged transversely beneath the main frame is a beam 43 which may be substantially H-sha ed in cross section. This beam is swinging y supported from the main frame of the grader and for this purpose the eye beams 10 have mounted thereon a transverse beam 44. Extending downwardly from each end of the beam 44 are telescopic hangers 45. These hangers have ball and socket connections 46 with the beam 44 and ball and socket connections 47 with the beam 43.

Each of the hangers 45 comprises an outer sleeve 48 and an inner sleeve 49, as shown in Figure 5 of the drawings The sleeve 48 is connected with the beam 44 by the ball and socket connection 46 previously described, while the sleeve 49 is connected with the beam 43 by the ball and socket connection 47 L Mounted upon the upper` end nf the sleeve 48 is a gear housing 50 and located within this housing are beveled gears 51 and 52. The gear 51 is mounted upon the upper end of a shaft 53 and the latter extends downward through the sleeve 48 into the sleeve 49. This shaft 53 is threaded as shown at 54 and threadedly engages `the upper end of the sleeve 49, so that when theshaft is rotated, Th the sleeve 49 will be raised or lowered and 79 will carry with it the beam 43. l.As the construction is duplicated at opposite ends of In order 'to rotatethe frame 25, the steeringY Lavaca:

the beam 43, each end of this vertically adjusted. A

The gear 52 is mounted upon a shaft 55 which extends from the housing 50, and is connected by means of a universal joint 56, with telescopically mounted rods 57 which extend rearwardl and the rods 57 are rotated by a hand w eel 58 through the mediumv of a luniversal joint 57 This structure is also duplicated upon o posite sides of the beam may be i machine,'and is mounte 1n suitable bearings lprovided on the main frame.

Extending rearwardly from the king pin bearing means is a beam 59. The rear end of this beam is connected with the transverse beam 43 which also has connected thereto the rear ends of converging bars 59', the forward ends of which mer e into the king pin bearing vmeans. The am 43 is transversely slotted as shown at 60, the slots being of arcu- -ate formation and substantially T-shape in cross section, for the passage of an annulus 61 which is T-shape in cross section. This annulus is provided with Across bars 62, and extendin through these ycross bars and through t e rear end of the beam 59 is a pivot bolt 62.

l Secured to the annulus by means of arms 63 and braces 64 is a transversely curved scraper blade 65. This blade is designed to be angularly adjusted and for this purpose, one flange of the annulus is provided with spaced openings 66 which are adapted to register with openings 67 and 68 which are provided respectively in the beam 59 and in a bracket 69 carried by said beam. These openings receive a pin 70 so that the annulus 61 may be rotatably adjusted to adjust the position of the scraper blade 65 and held in adjusted position.v l

In addition, by operatingl the hand wheels 58, either or both ends of the beam 43 and consequently the scraper65, lmay be adjusted so that the scraper may be lifted clear of the surface, or it may be adjusted at a vertical angle as desired.

The scraper blade 65 may also be adjusted i laterally and for this purpose, the beam 43 has secured thereto by means of a universal joint 71, one section 72 vof a telescopic rod, the other section 7 3' of which is supported by a bracket 74 from one of the beams 10. A universal joint 75 connects the section 73 with the bracket`74. The telescopic rod just described is constructed similarly to the telescopic hangers 45, so that the upper end of the telescopic rsection 73 is connected to a gear housing 76. This housing includes gears slmilarto the gears 51 and 52, so that connection may be effected through a universal joint 77 4with one end of a rod 78. is rod is also provided with a hand wheel ly means of the hand wheel the beam 43 may be swung laterally in either direction scraper blade.

As will be seen by reference to Figure 4 of the drawings, the inner and outer sections .of

5 the telescopic hangers 45 have a lug and` slot connection 80 with one another so as to prevent relative rotary movement, while a similar lug and slot connection 81 is rovided between t e telescopic sections 72 an 73.

The invention vis susceptible of various chan es in Iits form,`proportions and minor deta' of construction and the right is herein reserved to make such changes as properly l fall within the scope of the appended claims.

Having described the invention what is 1. In a road grading machine, a roller' su o rted frame, a beam disposed transverse y below the frame, and being provided with transversely arranged arcuately disposed slots of substantially T-shape in cross section, an-annulus of T-shape `cross section having the horizontal portion thereof mounted in the slots for rotatable movement, a scraper blade connected with `the annulus for movement therewith to adjust the blade angularl in a horizontal plane with respectto the rame, means for securing the annulus against movement lto hold the blade in adjusted positions,

cross pieces bridging the annulus and piv 'otally secured to the beam, means bridging the frame and supported thereby, means carried by the last mentioned means and connected with the beam toindependently adjust the ends of the blade vertically, and

lmeans mountedupon the -frame andron- 7nected with the beam to move the latter for adjusting the 'blade laterally.

l 2. A .motorized -road roller and grading 40 machine Jcomprising a main frame includin spaced sidebeams provided withdownwar ly extending converging orward ortions merging together at their forward en S,- 'steering means including ground engaging rollers.

arran ed adjacent the forward ends, a cross beam rid 'ng the side beams gadjacent the rear ends tlereof, rearwardly extendin portions formed with the ends of the cross am# legs depending from the rearwardly, extendportions, means for detachably'securing a "wheeled 'pro lling means to. the side beams. v for disposal tween the legs,traction mem-v bers journaledjo the legs andxed to the' wheels of the propelling means ,for coopera*- tion therewith'to provlde vground engaging Y rollers2 and scraping means' avingfconnection with the frame. In testimony whereofI aix my signature..

' THOMAS D. WORKMAN.

so as to adjust the lateral position of the 

